Square D H361 Fusible Heavy Duty Safety Switch, 30A, 600V, 3-Pole, NEMA 1

The Square D H361 is a heavy-duty fusible safety switch designed for reliable disconnection and protection in industrial and commercial electrical systems. This 3-pole switch is rated for 30 amps at 600 VAC, making it suitable for applications requiring safe isolation of power to equipment like motors, machinery, and lighting systems. It features a robust NEMA 1 indoor enclosure that protects against accidental contact, with a visible blade design for easy verification of switch status. Key benefits include high short-circuit withstand ratings, quick-make/quick-break mechanisms for safe operation, and compatibility with Class H, K, R, or J fuses for enhanced circuit protection. Compared to non-fusible switches, the H361 offers integrated overcurrent protection, reducing the need for separate fuses and simplifying installations. Drawbacks may include its larger footprint compared to compact circuit breakers and the requirement for fuse replacement after faults. Ideal for use in manufacturing plants, HVAC systems, and pump controls, this switch ensures compliance with NEC standards for safety and reliability. The unit appears used with some surface wear and rust, but internal components like fuse clips and terminals show minimal damage, suggesting functional condition after inspection.